JEE Main levelSingle correct optionDifficulty 2 of 3nm140
Propene and cyclopropane (CX3HX6) show
Aposition isomerism
Bring-chain isomerism
Cmetamerism
Dchain isomerism
Answer: B
They have the same formula CX3HX6, but one has an open chain with a C=C bond and the other is a ring. Isomerism between an open-chain and a cyclic structure is called ring-chain isomerism.